I understand why they'd want to name it Disney-Pixar Studios, it gives some awesome marketing potential, but it kind of kills the "Classic Hollywood" theme. MGM gave it that classy touch, splashy musicals and all that stuff, it sort of screamed "40's Hollywood". The Walt Disney Studios would still work with the classic theme (albeit less star studded - when I think of Disney I don't think of Garbo, Bogart, etc, I think of cartoons, Fred MacMurray, and Annette Funicello).
The Pixar name makes me think of great animation, but it doesn't make me think of Hollywood - heck Pixar is almost as far removed from Hollywood physically as the "Black Mariah" is here in Edison, New Jersey!